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Louis Thenard, French chemist

Louis Thenard, French chemist

Elie de Beaumont, French geologist

Humphrey Davy, English chemist

Dmitri Mendeleev, caricature

Tessie du Motay, French chemist

Pierre-Oscar Figuier, French chemist

Johann Kunckel, German chemist

Joseph Gay-Lussac, French chemist

Jacques Charles, French balloonist

Jacques Charles, French balloonist

Joseph Priestley, caricature

Carl Ritter, German geographer

Louis Pasteur, French microbiologist

Franz Achard, German chemist

Pierre Macquer, French chemist

Joseph Louis Gay-Lussac, French chemist

Xavier Bichat, French anatomist

Antoine Lavoisier, French chemist

Andreas Vesalius, Belgian anatomist

Michel Chevreul, French chemist

Antoine Lavoisier, caricature

Guyton de Morveau, French chemist

Guyton de Morveau, French chemist

Louis Pasteur, French microbiologist

Louis Pasteur, French microbiologist

Aristotle, Ancient Greek philosopher

Louis Pasteur, French microbiologist

Fluorine preparation, 19th Century illustration

Henri de Ruolz, French industrial chemist

Henri de Ruolz, French industrial chemist

Theophile-Jules Pelouze, French Chemist

Joseph Louis Proust, French chemist

Joseph Louis Proust, French chemist

Henri Etienne St Claire Deville, French chemist

Francois Fenelon, French theologian

Johann Kaspar Lavater, Swiss theologist

Claude Berthollet, French chemist

Jacques-Louis De Pourtales, Swiss banker

Jacques-Louis De Pourtales, Swiss banker

Louis-Urbain-Aubert de Tourny, French architect

Antoine Fourcroy, French chemist

Pierre-Paul Riquet, French engineer

William Ramsay, Scottish chemist

Friedrich Wohler, German chemist

Gaspard Monge, French mathematician

Jean-Pierre-Joseph Darcet, French chemist

Jean-Baptiste Boussingault

Alfred Nobel, Swedish chemist

Alfred Nobel, Swedish chemist

Alfred Nobel, Swedish chemist

Making nitroglycerine, 19th Century illustration

Making nitroglycerine, 19th Century illustration

Claude Louis Berthollet, French chemist

Amedeo Avogadro, Italian scientist

Georges-Louis Le Sage, Swiss physicist

August Kekule, German chemist

Luigi Galvani, Italian physician

Francois Magendie, French physiologist

Joseph Louis Proust, French chemist

Hermann Kolbe, German chemist

Humphry Davy, British chemist

Gustav Froment, French electrical engineer

Gustav Froment, French electrical engineer

Augustin Cauchy, caricature

James Watt, caricature

Karl Friedrich Gauss, caricature

Benjamin Thompson, US physicist, 19th Century illustration

John Cockcroft, British physicist

Potassium hydroxyde chemical compound molecule

Potassium nitrate chemical compound molecule

Robert Bunsen, German chemist

August Wilhelm Hofmann, German chemist

Jules Janssen, French astronomer

Antoine Francois Fourcroy, French chemist

Antoine Francois Fourcroy, French chemist

Carl Merck, German naturalist

Jean Baptiste De La Salle, French priest

Francois Sudre, French composer

Gilbert Romme, French politician and mathematician

Sebastien Vauban, French military engineer

Frederick William III of Prussia, illustration

Jean Baptiste De La Salle, French priest

Francois Sudre, French composer

Francois Laurent, French aeronaut

Gilbert Romme, French politician and mathematician

Sebastien Vauban, French military engineer

Sebastien Vauban, French military engineer

Guillaume Carcel, french inventor

Jean-Daniel Colladon, Swiss physicist

Michael Faraday, British physicist

Gaspare Aselli, Italian surgeon

Sodium-potassium pump

Sodium potassium ion channel, molecular model

Johann Ritter, German physicist

Isaac Newton, English physicist

Isaac Newton, English physicist

Isaac Newton, English physicist

Joseph Black, Scottish chemist

Claude Louis Berthollet, French chemist, illustration

Claude Louis Berthollet, French chemist, illustration

Michel Chevreul, French chemist

Alessandro Volta, Italian physicist

Athanasius Kircher, German Jesuit scholar

Claude Adrien Helvetius, French philosopher

Athanasius Kircher, German Jesuit scholar

Aristotle, Ancient Greek philosopher

Isaac Barrow, English mathematician

Robert Bunsen, German chemist

Heinrich Rose, German chemist

Otto Hahn, German chemist

Alvaro Reynoso Valdes, Cuban scientist

Thomas Graham, Scottish chemist

William Perkin, British chemist

Alfred Nobel, Swedish chemist

Leonhard Euler, Swiss mathematician

Jean Pierre Flourens, French physiologist

Albrecht von Haller, Swiss anatomist, illustration

Andre-Marie Ampere, French physicist

Giovanni Cassini, Italian astronomer

Martin Lichtenstein, German physician

John Hunter, Scottish surgeon

Michael Faraday, British physicist

Antoine Becquerel, French physicist

Marcellin Bertholet, French chemist

Pygmies fighting cranes, artwork

William Herschel, British astronomer

Louis Breguet

Edmond Halley, caricature

Leonard Euler, caricature

Comte de Buffon, French naturalist

Voltaire, French author

Franklin's kite experiment, illustration

Albrecht Thaer, German agronomist

Denis Diderot, French encyclopedist

Friedrich von Schelling, German philosopher

Joseph Lagrange, caricature

Louis Agassiz, Swiss-US geologist

Halorhodopsin chloride pump

KcsA potassium channel molecule

Potassium channel molecule

Voltage-gated potassium channel

Louis Bonaparte, King of Holland

Moritz Hermann von Jacobi, German physicist

Moritz Hermann von Jacobi, German physicist

George Elkington, British industrialist

Potassium dichromate chemical compound molecule

Jean-Augustin Barral, French chemist

Richard Owen, British palaeontologist

Georg Riemann, German mathematician

Evariste Galois, French mathematician

Salomon de Caus, French engineer

Andre-Marie Ampere, French physicist

Armand-Pierre Seguier, French lawyer

Pavel Yablochkov, Russian

Galileo Galilei, Italian astronomer

Gaspare Aselli, Italian surgeon, illustration

Arthur Cayley, caricature

Charles Babbage, caricature

David Hilbert, caricature

Ernst Kummer, caricature

Henri Poincare, caricature

Lord Kelvin, caricature

Nikola Tesla, caricature

Carl Ritter, German geographer

Leon Foucault, French physicist

Hermann Boerhaave, Dutch physician

Prokop Divis, Czech scientist

Isaac Newton, English physicist

Konstantin Tsiolkovsky, rocket scientist

ATPase sodium-transporting rotor ring

Salt from chlorine and sodium

Salt from chlorine and sodium

Louis Stromeyer, German surgeon, artwork

Antoine Lavoisier, French chemist

Jons Jacob Berzelius, Swedish chemist

John Tyndall, Irish physicist

George Elkington, British industrialist

George Elkington, British industrialist

Christiaan Huygens, caricature

Henry Cavendish, British chemist

Louis Saint-Just, French politician

19th Century King of Siam, illustration

19th Century South American Mayoruna man, illustration

19th Century South American Ticuna man, illustration

19th Century South American Juri man, illustration

Chief Badumbe of Ancient Sudan, illustration

Karl Etzel, German railway engineer

Moncure Robinson, US civil engineer

Charles de Freycinet, French statesman

Albrecht Durer, German artist

Emile Flourens, French politician

Umberto I of Italy, 19th Century illustration

Leopold II, King of Belgium

Pope Leo XIII, 19th Century illustration

Piet Joubert, South African military commander

Charles Christofle, French jeweller

Karl Etzel, German railway engineer

Moncure Robinson, US civil engineer

Emile Pereire, French banker and businessman